Yani Corvianindya Rahayu; Agustin Wulan Suci Dharmayanti; Anya Tania Larasati. The Effect of Proanthocyanidin Cocoa Pod Rind Extract (Theobroma Cacao L.) on MMP-8 Expession in Gingival Tissue of Periodontitis Rats Model. DJKG 2021, 14, 88-93.